Multiple-cut sawing device



I Unlted States Patent 1111 3,540, 93

[12] Inventors Eugene L. Woloveke, References Cited Pleaaan! Hill;UNITED STATES PATENTS Thmlmm PIN", 1,140,555 12/1929 Warmoth 144/133California 2,814,319 11/1957 Hetman etal. l. 4 3l38X 12 1 pp No. 705,5472,995,162 8/1961 Mountain 144/3x 1 Flled 14. 1968 3,080,895 3/1963 Mayol43/36X 14$] Pate ed Nov-17,1970 2,662,563 1953 Grove 144/3ux [73]Assignee ldaeo Engineering and Equipment Co., a I

mm 0nd. company Prurtary Examiner-Andrew R. Juhasz 0M, cflum AssistantExgmmer-James F. Coan mum. of camomh Anomey- Mellin, Moore &Weissenberger MULTIPLE-CUT SAWING DEVICE 1 Claim, 15 Drawing Figs.

52 1,5,- (I 1 3 ABSTRACT: Apparatus for making out: on a workpiece 143/343/47; 144/3 which includes a pair of saws pivotal about a common axisand [51' IQLCI 827! 5/00 movable into and from the workpiece to makeout: therein, [50] Field Search 143/47, and nothe pa r of sa s disposedfurther along the workpiece and pivotal about another common axis andmovable into and from the workpiece to make cuts therein.

PatentedNov. 17, 1970 I 3,540,498

Sheet 1 of.6

I INVENTORS EUGENE L. WOLOVEKE 3 BY MARVIN M. THOMPSON Mr W ATTORNEYSPatented Nov. 17, 1970 Sheet 2 016 I INVENTORS EUGENE L. WOLOVEKE F 2 BYMARVIN M. THOMPSON ATTORNEYS Patented Nov. 17, 1970 3,540,498

Sheet 5 Of 6 INVENTORS I G 3 EUGENE L. WOLOVEKE BY MARVIN M. THOMPSON W21W F- u/ ATTORNEYS Patented Nov. 17, 1970 3,540,498

Sheet 4 Of6 INVENTORS EUGENE L. WOLOVEKE BY MARVIN M. THOMPSON ATTORNEYSPatented Nov; 17, 1970 I 3,540,498

Sheet. 5 of 6 FIG; 7

Fl G 7B INVENTORS EUGENE L. WOLOVEKE BY MARVIN M. THOMPSON ATTORNEYSPatented Nov. 11, 1970 3,540,498

Sheet 6-01 6 L, 240 258 I236 2|4 I INVHNTORS F |G ,9 EUGENE L. WOLOVEKEBY MARVIN M. THOMPSON Mf M42461! ATTORNEYS In -c' nstrueu y course, toprecut certain wooden frame pieces so that they can "be'as'sembled'iritoatruss easily' and conveniently. Generally, these frame piecesarerelatively long, and require either a singlc'cut or a'pair ofcutsoneither end thereof. These cuts may va'ry'in' angle and depth fromworkpiece to workpiece; since "the dimensionsof thetrusses vary fromhouse to house. Obviouisly, it 'would be highly desirable to provide adevice which is Hetman et al.) fallinto the second.

MULTIPLE-CUT SAWING DEVICE BAoK ROUNDoF THE INVENTION Thisl'inventionrelates to a device which makes cuts in a workpiece, and moreparticularly to a device-which is capable of making cuts on the ends ofa workpiece by movement of saws into and from the workpiece.

on of houses, and the like,-it is desirable, of

capable ofmaking either a single desired cut or a pair of desired cutson the ends of a workpiece, meanwhile being capable of performing on' avariety of workpieces and opcrating in a most simple and efficientmanner. 7 v

Devices for precuttinga workpiece. such as a piece ofwood or metal, are.of course. well known. These devices generally fall into one of twocategories: cuts are made in the workpiece (l') byrri'oving' it into andfrom saws, or (2) by moving saws intoand from itflhe devices disclosedin U.S. Pat. Nos. 2', 684,088(Miller), 3,125,]33 (Bolenbach), and3,030,895 (Mayo) fall into the first category, while the devices in U.S.N05. 2,917,089 (Ennis 1), 3,295,570 (O'lbri'ch),

2 9l8, 950 (LeTarte), 3,251,388 (Ennis II), and 2,8l4,3l9

Those devices which move the workpiece into the-saws have the problem ofmoving the workpiece so that proper cuts are made, it of course beingimportant that the saws-actually'cut in the manner desired. Forany"consistency of cuts to be achieved from workpiece to workpiece, it isclear that means must be provided to guide the workpieces in an'accurate manner. This guiding problem is a substantial one; and. becomeseven greater when the workpiece to be moved is-of relatively greatlength or of unusual configuration. None of 40 the devices of the typefound appear to overcome this problem in an efficient manner.

Of those devices found which move the saws into the workpiece to makecuts, U.S. Pat. Nos. 2,9l7,089. (Ennis l) and one of the cuts devices iscapable of making a pair of cuts on the end of a workpiece,'with theadvantages attendant thereto.-

It is therefore an object of this Invention to provide a device which iscapable of'making a variety of pairs of cuts one workpiece by'movingsaws relative to the workpiece.

It is a further object to provide a device which iscapable of making avariety of pairs of cuts on bothends of'an'elongate. workpiece by movingsaws relative to the workpiece.

It is a still further object of the invention to provide a device which,while capable of fulfilling the above objects, is simple and efficientin operation.

suMMARvor THE INVENTION Broadly stated, theapparatus for making apair ofadjacent "cuts in' a workpiece held-thereby comprises a fixed sawmounted to the apparatu's'und movable into and from the workpiece. Meansare'included for moving the first saw into i the workpiece, whereby afirst'cut is made in the workpiece.

I of workpieces cut by the device;

piece. Means are includedfor movingthe second saw'into the workpiece,whereby a second cutis made in theavorkpiece adjacent'the first cut, thepivotalmounting-of'thesecondsaw allowing a 'variety of second cuts tobemadein the workpiece.

--Means are included for moving the-second saw from tli workpiece. e t

BRIEF DESCRIPTION orrnsbmwtnosf} These'and other objects of theinventiomwillzbecome apparent from a study of the following-ltspecification and drawings, in which: i

FIG. 1 isaperspective viewof-theldevicc; FIG. 2 is an end elevation ofthe device; FIG. 3 is a side elevation of the device; I FIG-4 is a planview of a holding arm'ofthe device;

FIG.5 is a side elevation ofthe-deviceof FIG. 4; FIG. 6 is a plan viewof the saw blade s in t'he devicc,.showing theirpivotal travel;

FIGS. 7A through 7B are plan views bin-numbeb'dtiworkpieces cut by thedevice: 1 I

FIG. 8 is a side elevation of aitruss 'whichutilizes number FIGI'Q is aside elevation of a mediate cutin a workpiece; I I,

FIG. I0 is a plan view of thedevicerif FIG; 19; and FIG. 11 is a: planview of a workpiecethaving an interdcvicet'ora mak-ing' an intc r-"mediate cut thereon as made by the device-*bfFIGS 9 and I0.

DESCRIPTION or THE PREFERREDJEMBODIMENT Referring to the drawings, thesawingdevicelflisigcnernlly shown in FIG. l. The device loincludesa pairof 'parallel tracks 12 and 14 mounted on blocks 16,1830; 22A-puir ofrunners 24', 26 each mounted on apair'of wheels -28; 30, and 32, 34,respectively, have .fixed thereto a'substantially C- shaped member 36made up of a baseportiorl lifi an upright portion 40, anda top portion42. Th'c wheels 28,30, 32, 34 are disposed on and are rollable over thetracks 12,14.

A saw assembly 44 is pivotally mounted to the base portion 38 by meansof a shaft 45 dispos'cd'in a sleeve46fixed to the about theaxis of pin52. Stop means58 and 60 are mounted to base portion 38. Suitablebearings (not shownlareprovided to allow easy pivoting of the sawassembly 441.clative to the base portion 38.

The structure of the saw assembly 44 is best shown'in FIG. 2. Mounted tothe shaft 45 is a U-shapedrbrackct'4fl to which a motor mount 50 ispivotally mounted-hy-mcansof-a pin 52. An

electric motor 54 is fixed-to the motor-mounted and has a saw blade 56mounted thereon. As seen in-FIG22, the'structure allows a degree ofpivoting of the motor 54'and motor mount 50 bracket 48 to limit thepivotal movement-of the motor 54 and motor mount 50. The saw blade 56 isthuspivotable from position A to position B and back againzlixed tothe-bracket 48 is a casing 62disposed'about sawablad'e-56 and having aslot 64 therein to allow movement of the saw=blade56from position A to'position B, the saw blade'56 cxtending' frorn the-casing 62 when inposition B. A split=ring66 is fixed relative toslccve 46 about shaft 45and is tightenable thcrearound to fix the position of the shaft 45 inthe sleeve46. The shaft4srand sleeve 46 allow pivoting of the sawassembly'i44 of l 80. Scale means 68 are fixed to the sleeve'46, wherebythedesired position of the -72 and suitable bearings aredisposedirliixed'to the -end of the shaft 7.2 is 'alongitudinalguldermember 'fl having a saw ussembly 76 slidably'mountedthereon:- Suitnblc means are pro- Means are included formo'ving thefirst saw from the workpiece. A second sawis pivotally mounted to theapparatus and movable independent ofsuch pivotinginto the workpieceadjacent the first cut made in the workpiece and from the worksaw'assernbly 44 may be set.

Top portion 42 has fixed thereto a'slcevc' flfl in which a shaft vidcdvon-the' end of the shaft 72- totkecpit disposed in the sleeve 70. Itwill be-scen that the. guidezmctnhcrmand saw assembly 76- are togetherpivotuhle relative to the top portion 42. Theshaft 72 andsleevemallow-pivoting thereof l8(). Scale means 80', and asplitring" 82;similar tosplitring 66, are

' provided so that-the position oftheguide member'l-t and saw assemhly76 may be set.

r1 f cylind r casing 112,,lying 3 Saw assembly 76 is made up of a motormount 84 slidably mounted on rods 85 mounted in guide member 74, anelectric motor 86, a casing 87 held relative to the motor and a sawblade 88 fixed to the motor 86. The assembly 76 is slidable fromone endof the guide member 74 to the other. The saw blade 88 may thus be movedfrom position C to position D and back again.

Fixed to an end of the tracks 12, 14 are a pair of braces 90, 92 towhich a substantially C-shaped member 94 is fixed. This member 94 has alower portion 96, an upright portion 98, and a top portion 100, similarto member'36. A saw assembly 102, similar to saw assembly 44, ispivotally mounted to the lower portion 96. The saw assembly includes aU-shaped bracket 104, motor mount 106, an electric motor 108 and a sawblade 110. The motor mount 106 and motor 108 are pivoted about a pin(not shown) in the bracket 104, whereby the saw blade 110 is movablefrom position E to position F and back to position E again. Thismovement is similar to the movement of motor mount 50, motor 54, and sawblade 56 as shown in FIG. 2. A casing 112 serves the same function ascasing 62. A split ring 114,.similar to split rings 66 and'82, isincluded to fix the position of the saw assembly 102 relative to thebase portion 96. The saw assembly 102 is pivotable to the extent of 180relative to the baseportion 96. Scale means 116 are included 7 so thatthe desired position of the saw assembly 102 may be set.

Top portion 100 has pivotally fixed thereto structure similar inconstruction and operation to guide member 74 and saw assembly 76 ofFIG. 2. This structure includes a longitudinal guide 120, along which asaw assembly 118 (having a motor 122, saw blade 124 thereon, and acasing 125) is slidable from one end to the other thereof. The saw blade124 is thus mova- 1 ble from a position G to a position H and back'againto position G. Pivoting of l 80 of the saw assembly 118 relative to thetop portion 100 is allowed. Scale means 126 are included so that theproper position of the saw assembly 118 can be set, and a split ring128, similar to split ring 82, is included to fix the position of theguide member 120 and saw assembly 118 relative to the top portion 100.

r A locking member 130 is fixed to runner 24 and is adapted =to grip thetrack 12 to hold the member 36 relative to the member 94.

Fixed to upright portion 98 and extending inwardly therefrom parallel totracks 12, 14 is a bracket 132 having an arm 134 extending'therefromtoadjacent the sawassemblies 102 and 118. Similarly, fixed to uprightportion 40 and extending inwardly therefrom parallel to tracks 12, 14 isa bracket 136 having an arm 138 extending therefrom to adjacent the sawassemblies 44 and 76. The arms 134, 138 are similar in construction, andone (134) of these is shown in FlGS.4and 5.

Arm 134 is made up of two sleeves 140, 142 in which cylinder 144 and 146are respectively disposed. The rod 146 is slidable in the sleeve 142 andthe position of rod 146 relative to sleeve l42 may be fixed by means ofa ball-and-pin assembly 148 the pin of which may be disposed in anaperture 150 in the sleeve 142 and one of a series of apertures 152 inthe rod 146. The rod 146 has extending therefrom an angle arm 154 towhich a pivotal arm 156 is attached. Piston rod 144 has fixed to one enda plate 160 which in turn has a stop 162 fixed thereto. A spring 160 tobracket 132 to keep the plate 160 against'slceve 140 in its restposition. I l

ln the operation of the device as described, the saw blades 88 and 124are normally in positions C and G respectively, being resiliently heldthere by'air'p'ressure in a system not move these pivotal arms to theupper position shown in H0. 5 and hold them there, whereby the piece ofwood will beheld between these pivotal arms and the stops (as 162). Theposition of therod 146 relative to stop 162 (in the set position) may bevaried by sliding the rod 146 (and the pivotal arm 156 with it) andplacing the ball-and-pin assembly 146 in the proper aperture 152 in therod 146. The structure of arm 138 may be adjusted in the same manner.Various widths of wood mayjthus be properly held thereby. A supportstand 166 may be included nearthe middle of thedevice to aid insupporting the workpiece if it i sj lon'g (i.e., if C-shaped members 36and 94 are spaced relatiyelyfar apart).

The saw assemblies 44', 76, 102, 118 are then pivoted so that saw blades56, 110, 124 will move intothe workpiece at a chosen angle to make adesired cut, and 'are"lockcd from pivoting as described above. Motors54, 86, 108, 122 are then actuated to rotate the saw blades. Pneumaticcylinders. connected by lines to an air pressure source are used withthe saw assemblies 44, 102 to pivot the saw blades 56, 110 from theirnormal positions (A and E respectively) to their positions 8 and Frespectively, whereby cuts are made in the workpiece. The air pressureto these pneumatic cylinders is then cut off, and the saw blades 56, 110will be moved back to positions A and B respectively, by air pressure,as described above, and removed from the workpiece. Pneumatic cylinders,connected by lines to an air pressure source, are used with the sawassemblies 76, 118 to move them (and'saw blades 88, 124) along guidemembers 74, 120 respectively, the saw blades 88 and 124 moving fromposition C to position D and from position G to position H respectively.Cuts are thereby made in the workpiece, the saw blades 88, 124 travelingalong paths into the workpiece butjust above the casings 62, 112respectively. The air pressure to these pneumatic cylinders is then cutoff, and the saw blades 88, 124 are moved back to positions C and Grespectively by the air pressure described above, and from theworkpiece. The air pressure to pneumatic cylinders holding the pivotalarm 156 and the like pivotal arm on arm 138 is then cut off, whereby theworkpiece is no longer held relative to the device 10. Pneumaticcylinder 144, and a like cylinder in arm 138, are then actuated for ashort time to kick the workpiece by stop means 162 and a like memberonarm 138. These cylinders are then moved back to normal position byspring 164 and a similar spring in arm 138.

it will be seen that a variety of cuts may be made on a work piece sothat the ends of the workpiece may be cut to desired configuration. Afew of these cuts are shown in FIGS. 7A through 713. A single cut on oneend of the workpiece, as in FIG. 78, may be made by only actuating oneof the same assemblies mounted on a C-shaped member. if preferred, onlythe saw assemblies mounted on one of the C-shaped members may beactuated, and the other end of the workpiece left uncut. A great varietyoflengths of workpieces may be cut by the devicev 10 by merely movingC-shaped member 36 along tracks 12, 14 toward or away from C-shapcdmember 94 and locking it in place by locking member 130. Each member ofthe truss 168 of FIG. 8 may be cut to proper specification by thedevice.

In this embodiment, each saw blade 56, 88, I10, 124 is moved to cutentirely through the workpiece. However, it will be seen thatalterations can be made to the device so that the 164 runs from platepivotable about a common axis, and the saw assemblies 102 and 118. arepivotable about another common axis. The

a desired length of the resulting workpiece may thus be chosen shown.Saw blades 56 and 110 are normally in positions A and E, beingheld thereby air pressure. A piece of wood or other workpiece is then.

v arm 156 and the pivotal arm connected to arm 138 are in the lowerposition shown in FIG. 5, Pneumatic cylinders, and lines:

connected from them to a source of air pressure, are used to '70 placedon, casing 62, arm 138, arm 134 and across the top of each of them. Thepivotal and will not vary even though the saw assemblies 44, 76, 102, 118 may be pivoted to various positions.

' The embodiment described is set up so that the complete operation isto a great extent automated. As described above,

the workpiece is placed in position. A button is pushed tosimultaneously actuate the-pivoting of the arms on arms 134,

138 and start the saw motors 54,86, 108, 122. Pushing that corner of theplate button also actuates pneumatic cylinders which substantiallysimultaneously move saw blades 56, 110 into the workpiece.

As these saw'blades56, 110 move into their positions 8 and F-respectively, this movement trips switches which deactuate thosepneumatic cylinders to allow the saw blades to be moved back topositions A and B respectively. As they move to these ders to allow thesaw blades 88, 124 to be moved back to positions C and G respectively.Asthey move back to these positions, switches are tripped to release thehold on the workpiece. The operator may actuate cylinder 144 and thelike cylinder in arm 138 to kick the workpiece from the device, all asdescribed above. The device 10 is then ready to receive anotherworkpiece. With this manner of operation, it has been found that up to18 pieces per minute may be cut. 7

ln certain situations, it may be desirable to make a cut intermediatethe ends of a workpiece for use in construction, for example, as a roofmember. Such a workpiece 210 is shown with an intermediate cut 212therein in FIG. 11. For making such a cut, a device 214 is shown inFIGS. 1, 9 and 10. The device 214 includes a pair of flanges 216, 218 onwhich wheels 220, 222, 224, 226 are mounted to run on tracks 12, 14. Acrossmember 228 is fixed to flanges 216, 218. A plate 230 is movablelongitudinally along crossmember 228 and lockable in position by meansof lock 232. Pivotally connected to a 230 is a second plate 234 having apair of upright tubular sleeves 236, 238 fixed thereto. These tubular.sleeves 236, 238 support a brace member 240 on which is fixed a supportbeam 242, on which is fixed in turn a wood block 244. Rods 246, 248 areslidably disposed in tubular sleeves 236, 238 respectively, and fixed toends of rods 246, 248 is a plate 250 to which is fixed an electric motor252. A dado blade 254 is fixed to the electric motor to be rotatedthereby. A casing 256 substantially surrounds the dado blade 254 and isfixed relative to brace member 240.

A pneumatic cylinder 258 interconnects the second plate 234 and theplate 250. Air pressure is applied to the pneumatic cylinder 258 to movethe electric motor 252 and dado blade 254 upward or downward in FIG. 9,the rods 246, 248 sliding in sleeves 236, 238 respectively as suchmovement takes place. In such manner, the dado blade 254 can be movedinto and from a workpiece 260 disposed on woodblock 244.

A slot 262 in second plate 234 allows that plate, and the motor 252 anddado blade 254, to be pivoted, and locking means 264 are included tolock the blade 254 in position relative to the plate 230.

ln the use of the device 214, it is disposed on tracks 12, 14 of thedevice 10. Locking means 266 are included to lock the device 214relative to the tracks 12, 14, and to a workpiece to be held by thedevice 10. The position of plate 230 relative to crossmernber 228 maythen be chosen and fixed by locking member 232. The motor 252 and blade254 may then be pivoted to a desired position and locked in place bymeans of locking means 264. A workpiece 260 is then disposed on and heldby the device 10 as disclosed above. The position of the motor 252 andblade 254 are chosen so that the workpiece rests on woodblock 244. Thepneumatic cylinder 258 may then be actuated to move the dado blade 254vinto the workpiece to make 'a cut therein ofthe type shown in FIG. 11.The

pneumatic cylinder 258 then withdraws the blade 254 from the workpiece260.

The operation of the device 214 may be going on during the operation ofsaw assemblies 44. 76. 102, 118 and may, of course, be actuatcdautomatically by switches similar to those described previously.

lt will be seen that herein is provided a device which is capable ofmaking a variety of cuts on a workpiece by moving saws relative to aworkpiece held by the devices. As described,

airs of cuts on both ends of a work iecc can be made by movmg the saws.The device describe to make these cuts is extremely simple and efficientin operation, and can turn out a great number of finished workpieces ina relatively short time. This allows a great number and variety of, forexample, wooden frame pieces to be cut so that they can be assembledinto a truss easily and conveniently. The device can easily be adjusted,as described, to allow for a single cut, or no cuts at all, on one endof a workpiece and a accommodate a great variety of lengths ofworkpieces. lf desired, the device may be set up so that a saw blade (orsaw blades) do not cut entirely through the workpiece, or may be set upso that a full cut is made, severing a piece from the workpiece.

The adjustment feature of the support arms may be utilized toaccommodate varying widths of workpieces. The stops (as 162) can bechanged to vary the overall position of the workpiece so that cuts ofproper disposition can be 'in the workpiece.

Obviously, ferent ways, and the embodiment shown and described is merelyillustrative. Consequently, we do not desire to be limited by theembodiment shown and described, but only by the scope ofthc followingclaims.

We claim:

1. Apparatus for making adjacent, intersecting cuts workpiece,comprising:

a. a frame member;

b. an elongated guide member mounted on said frame member for pivotalmovement about a first axis;

c. a first rotary saw mounted on said guide member for movementlongitudinally of said guide member so that its blade moves in a firstplane including said first axis;

d. bracket means mounted on said frame member for pivotal movement aboutsaid first axis, said guide member and bracket means being spaced fromone another along said first axis;

e. a second rotary saw mounted on said bracket means for pivotalmovement about a second axis generally normal to said first axis;

f. means for positioning a workpiece between said saws;

g. means for moving said first saw longitudinally across said workpiccefI h. means for moving said. second saw pivotally about said second axisinto said workpiece; and

i. whereby said first and second saws are adapted to make adjacentintersecting cuts in said workpiece, the point of intersection of saidcuts being on said first axis regardless of the angle said cuts makewith'one another.

in a

the invention can be carried out in many dil

